Urology Case Reports (Nov 2019)

A case report of unilocular cystic mucinous tubular and spindle cell carcinoma with mural tumor nodule

  • Nahoko Nagano,
  • Noriyoshi Ishikawa,
  • Mamiko Nagase,
  • Takafumi Fukushima,
  • Hiroaki Shiina,
  • Riruke Maruyama

Journal volume & issue
Vol. 27

Abstract

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Mucinous tubular and spindle cell carcinoma (MTSCC) is a rare type of renal cell carcinoma (RCC). Classic type of MTSCC is characterized by small, elongated tubules lined by clear cuboidal or spindle cells with mucinous stroma. The neoplastic cells are always low-grade histological features. But, unclassified variants of MTSCC have also been reported, e.g., mucin-poor, papillary, high grade, and sarcomatoid variants.We present the first case of simple cyst with mural nodule exhibiting the histological features of mucin-poor MTSCC. We should be aware that MTSCC can arise in a cystic renal lesion.